.logo_box {
  width: 200px;
  text-align: center;
}
.layui-nav-img {
  width: 45px;
  height: 45px;
}
.user_span {
  display: inline-block;
  margin-top: 10px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: #009688;
  text-align: center;
  line-height: 38px;
  color: aliceblue;
  font-size: 20px;
}
.user_box {
  height: 60px;
  line-height: 60px;
  padding-left: 40px;
}
.layui-nav-tree i {
  margin-right: 5px;
}
.layui-nav-tree .layui-icon-tabs {
  margin-left: 30px;
}
.layui-nav-tree .layui-nav-item a {
  line-height: 30px !important;
}
.layui-footer {
  text-align: center;
  font-size: 12px;
}
iframe {
  padding: 20px;
  background-color: #eee;
}
